Scleral Contact Lenses: A Deep Dive into Advanced Vision Correction

Scleral contact lenses represent a significant advancement in the field of Optometry, offering a unique solution for various complex vision issues. As an Optometrist, I recognize the importance of understanding these specialty lenses. This comprehensive guide delves into the world of scleral lenses, explaining their design, benefits, fitting process, and potential applications. Our Calgary Optometrists can help you get a great fit with sclerals. If you’re ready to take the leap reach out to our conveniently located Eye Clinic in Southcentre Mall Calgary, Alberta.

What are Scleral Contact Lenses?

Scleral lenses are large-diameter gas permeable contact lenses that vault over the entire corneal surface and rest on the white part of the eye, known as the sclera. Their design differs significantly from standard contact lenses, making them suitable for a range of challenging ocular conditions. The concept of scleral lenses dates back to the early 1880s. Initially, they were made from glass and covered the entire front surface of the eye. Modern scleral lenses, developed in the late 20th century, use highly oxygen-permeable materials, offering improved comfort and eye health.

Design and Types of Scleral Lenses

Scleral lenses are categorized based on their size and where they rest on the eye:

  • Mini-Scleral Lenses: These lenses are slightly larger than traditional GP lenses and are effective for moderate corneal irregularities.

  • Full Scleral Lenses: These are larger and provide greater stability, making them ideal for severe corneal irregularities and ocular surface diseases.

Scleral lenses function by creating a tear-filled vault over the cornea. This design not only corrects vision anomalies but also protects and heals the ocular surface. The space between the lens and the cornea acts as a fluid reservoir, which is beneficial for dry eye conditions and promotes corneal healing.

Indications for Scleral Lenses

Scleral lenses are particularly beneficial for:

  • Keratoconus and other Corneal Irregularities: They provide a smooth refractive surface over an irregular cornea.

  • Severe Dry Eye Syndrome: The tear reservoir helps maintain a hydrated ocular surface.

  • Post-Corneal Transplant: Sclerals offer a safe and comfortable vision correction option.

  • Ocular Surface Disease: These lenses protect the eye from external irritants and aid in healing.

Benefits of Scleral Lenses

  • Improved Visual Acuity: Scleral lenses offer sharp, clear vision, especially in cases of corneal irregularities.

  • Comfort: Their larger size and unique fitting minimize lens movement, enhancing comfort.

  • Protection: They protect the cornea from external irritants and aid in tissue recovery.

  • Reduced Dry Eye Symptoms: The fluid reservoir alleviates dry eye discomfort.

Fitting Process of Scleral Lenses

Fitting scleral lenses is a meticulous process that requires specialized expertise. This is why it’s important to select a top Optometrist with scleral lens knowledge. It involves:

  • Detailed Measurement: Advanced equipment is used to measure the eye’s surface.

  • Custom Design: Each lens is custom-made to match the individual’s eye shape and vision needs.

  • Trial and Adjustment: Fitting may involve trial lenses and several adjustments to ensure optimal fit, vision, and comfort.

Application and Wear

Scleral lenses are generally recommended for daily wear. Proper application involves filling the bowl of the lens with a sterile saline solution before placement on the eye. Removal requires specific techniques and tools to avoid damaging the lenses or the eye.

Care and Maintenance

Caring for scleral lenses is crucial for maintaining eye health:

  • Daily Cleaning: They require daily cleaning and disinfection with recommended solutions.

  • Regular Check-ups: Regular follow-ups with an eye care professional are essential to monitor eye health and the condition of the lenses. These follow ups are included in the scleral lens package at our Eye Clinic in Southcentre Mall Calgary, Alberta.

Potential Challenges

While scleral lenses offer numerous benefits, they can present challenges such as adaptation to lens application and removal, initial discomfort, and the need for regular maintenance.

Conclusion

Scleral contact lenses are a transformative solution in the field of vision correction, particularly for individuals with complex ocular conditions. Their unique design offers superior comfort, protection, and visual acuity. However, their successful use requires a precise fitting process, diligent care, and ongoing professional supervision. As advancements continue in the field of optometry, scleral lenses stand out as a remarkable achievement, offering hope and improved quality of life to many with challenging eye conditions. If these lenses interest you, come see one of our best Optometrists at our Eye Clinic in Southcentre Mall Calgary.